Perhaps you should try some spelling variations:
studi della » studio della, studio delle, studi sulla
studio dell » studio della, studio delle, studio del
studi de » estudi de, studi del, studie de
"studi e saggi" » "studi _ saggi", "studi di saggi", "studi de saggi"
sang" » san", wang", song"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("studi e saggi") OR ((("((studi de) or (((studi della) or (studio dell)))) saggi") OR ("((studi de) or (((studi della) or (studio dell)))) sang")))).
• Removing quotes may allow a broader search: (( studi e saggi ) or ((( ((studi de) or (((studi della) or (studio dell)))) saggi ) or ( ((studi de) or (((studi della) or (studio dell)))) sang )))).
• Adding a wildcard symbol may retrieve word variants: (("studi e saggi") or ((("((studi de) or (((studi della) or (studio dell)))) saggi") or ("((studi de) or (((studi della) or (studio dell)))) sang"))))*.